One vertex per element, one color per generator, with an edge from x to x·s.
(2,6)(4,11)(7,12)(8,13)(10,15)(14,16)(17,18,22,26,23,25,21,19)(20,28,29,32,31,27,30,24)(1,2,4,6,5,8,11,13)(3,7,10,12,9,14,15,16)(17,19,22,25,23,26,21,18)(20,27,29,32,31,28,30,24)(1,3)(2,7)(4,10)(5,9)(6,12)(8,14)(11,15)(13,16)(17,20,21,30,23,31,22,29)(18,24,26,28,25,32,19,27)(2,8)(3,9)(6,13)(10,15)(17,21,23,22)(18,19,25,26)(20,29,31,30)(24,28,32,27)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.